CN107406095A - Equipment for introducing from auxiliary torque to the steering spindle of electromechanical power steering - Google Patents
Equipment for introducing from auxiliary torque to the steering spindle of electromechanical power steering Download PDFInfo
- Publication number
- CN107406095A CN107406095A CN201580074783.0A CN201580074783A CN107406095A CN 107406095 A CN107406095 A CN 107406095A CN 201580074783 A CN201580074783 A CN 201580074783A CN 107406095 A CN107406095 A CN 107406095A
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- CN
- China
- Prior art keywords
- gear
- sensor element
- steering
- steering spindle
- equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
- B62D5/0412—Electric motor acting on the steering column the axes of motor and steering column being parallel
- B62D5/0415—Electric motor acting on the steering column the axes of motor and steering column being parallel the axes being coaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0215—Determination of steering angle by measuring on the steering column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0235—Determination of steering angle by measuring or deriving directly at the electric power steering motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
- B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/104—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
- G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0442—Conversion of rotational into longitudinal movement
- B62D5/0454—Worm gears
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Steering Mechanism (AREA)
Abstract
The present invention relates to a kind of middle auxiliary torque and/or the equipment (2) of additional steering angle, the equipment of introducing of steering spindle (1) being used for electromechanical power steering (100) to include：Gear (20), the gear is attached to steering spindle (1) in a rotationally fixed manner, and the operated gear be connected to the driving element (22) of drive motor (24) and can be driven in rotary manner by the driving element；And sensor element (51), the sensor element are connected to steering spindle (1) in a rotationally fixed manner.In order that sensor element (51) can be installed with low cost level and cause sensor element to take installing space as small as possible, it is according to proposed by the present invention：Sensor element (51) is connected to each other with gear (20) at contact area (57,211) place.
Description
Technical field
It is used to introduce auxiliary torque and/or additional turn into the steering spindle of electromechanical power steering the present invention relates to a kind of
To the equipment at angle, the equipment includes：Gear, the gear are fixedly attached within to be rotated together with steering spindle in steering spindle, and
The driving element of drive motor is connected to the operated gear and can be rotatably driven by the driving element；And sensor
Element, the sensor element are fixedly connected to steering spindle to be rotated together with steering spindle.
Background technology
It is auxiliary torque and/or additional steering in the steering of electromechanical power steering in the construction of motor vehicles
Extraly it is coupled in a manner of the steering angle and steering torque applied dependent on driver to steering wheel electric drive at angle
In steering spindle.For this purpose, the equipment has to be made it possible to the auxiliary as caused by electric drive motor the equipment of general type
Moment of torsion is transferred to the gear mechanism of steering spindle.Therefore, in a preferred embodiment, the gear configurations in steering spindle are worm gear, should
Worm engaging on the output section of worm gear and drive motor.
Steering torque determines that especially exactly, steering torque passes through defeated to steering wheel side by means of torque sensor
Enter the measurement of the relative rotation angle between axle and tooth sector side output shaft to determine, wherein, steering wheel side input shaft is with turning
To gear side output shaft that are connected to via the torque rod (torque arm) of the torsional rigidity with determination in a manner of turnable elastic
This.Relative rotation angle and steering angle, the i.e. absolute angular position of steering lock determined by means of sensor device, wherein, pass
Sensor element that sensor arrangement includes being fixedly connected to the section of steering spindle rotating together with the section, it is used for example as sending out
The magnet apparatus of emitter.The Angle Position of sensor element is detected by electronics sensing element, wherein, electronics sensing element is relative
It is static in rotatable steering spindle, component is formed, detects the magnetic field dependent on the anglec of rotation of such as sensor element, and by magnetic
Field output is electric measurement signal.Measurement signal is input into the regulation activated to the electric drive of electromechanical power steering
Limit on device and therefore auxiliary torque to be introduced into.
It is known in the art that by for the sensor device of angular surveying, especially definitely for be connected to turn
It is arranged in the sensor element of axle for being introduced into the equipment of general type of auxiliary torque.For example, DE 10 2,009 028
828 A1 are disclosed and equipped face are constructed in steering spindle, and sensor element shrinks to be fitted on the equipped face is matched somebody with somebody with forming interference
Close.However, equipped face is necessarily required in the equipment for being introduced into auxiliary torque the obtainable installation sky only on limited extent
Between；In addition, the generation in equipped face is adversely associated with extra procedure of processing.In addition, with the fastening member being made of plastics
The sensor element of part enduringly and can be firmly fastened to by means of interference engagement only on limited extent.DE 10 2007
022 282 A1 describe the another possibility of fastening, i.e. are regularly glued sensor element by means of UV solidification adhesives
Knot is in steering spindle.However, installing space must equally be herein obtainable, and it is colored in terms of being bonded in work and time
Take larger.Finally, the A1 of DE 10 2,011 118 642 have been disclosed for：It is first that plastic components is for example logical instead of being equipped with face
Cross crimping, connected in a manner of shape-ordinatedly locking or injection-molded and be attached in steering spindle, then by sensor element
Plastic components the plastic components is connected in a manner of integratedly engaging.In the case of the process, need also exist for relatively
Substantial amounts of installing space.In addition, for the offer and attachment of the extra plastic components on axle are provided, production and processed complex
Degree is equally of a relatively high.
In view of above mentioned problem of the prior art, the purpose of the present invention be to originally referring to that the equipment of type is improved,
So that the attachment of sensor element can be carried out with relatively low complexity, and installing space as few as possible is used.
The content of the invention
In order to solve the above problems, it is according to proposed by the present invention：Sensor element is connected to that with gear with contact surface
This.
According to the present invention, sensor element is connected directly to gear first, and the gear is typically to always exist in originally to carry
And type for the turbine that is introduced into the equipment of auxiliary torque, and the special connection between gear and steering spindle and sensing
Special connection between device element and steering spindle is not all carried out under any circumstance as in the prior art.In other words,
Sensor element directly abuts the surface in the region of contact surface of gear in the region of its contact surface using its surface.
Therefore connection is carried out in the region of contact surface by engaging connection, sensor element contacts in this region with gear.Cause
This, not must be provided with single fastener to receive sensor first in steering spindle as required in the prior art
Part.Therefore, gear and sensor element can be arranged to close to each other as much as possible, so as to which particularly small number of installing space is made
With.In addition, the additional processing of the steering spindle of receptacle to needing to be configured to sensor element in the prior art can be by
Save.Therefore, produce complexity and related cost is advantageously reduced.
The particularly advantageous embodiment of the present invention causes sensor element to be connected in a manner of integratedly engaging
Gear.Therefore, realize one engagement connection in the region of contact surface, the one engage constitute it is especially durable and only
Can be by the destruction to being connected to mutual part come separated lasting non-disconnectable connection.In addition, one engagement connection is excellent
Point is：Complicated processing or system need not be carried out to the surface in the region of contact surface of sensor element and gear
It is standby, and particularly compact global design can be realized.
One engagement connection is realized preferably due to the fact gear is soldered to sensor element.Welding is by making gear
With the material of sensor element by the input of heat and local melting at the abutment surface in the region positioned at contact surface and
Melt stage is connected to carry out, so as to form the approximate continuous material structure of homogeneous after the cooling period, that is to say, that actually shape
Into individual construction element.Welding for example can fetch progress by ultrasonic bonding or friction welding (FW), in ultrasonic bonding or rub
Wipe in welding, the contact surface to abut against each other is moved relative to each other and rubbed in this process caused by part at higher frequencies
Chafing ensures actual welding operation.This is the standard procedure through testing and testing, the standard procedure with relatively low complexity and
Shorter cycle time makes reliable one engagement be connected to become possibility.As an alternative, laser welding operation can be carried out,
Especially, the laser welding operation is even in the case of the different and/or complicated component geometry structures of element to be connected
Equally make quick and be firmly connected to become possibility.
As an alternative, it is anticipated that, gear is bonded to sensor element.Connect in such one engagement
In the case of connecing, adhesive is inserted between contact surface, and the adhesive is adhered to connection pairing in optimal manner after hardening
The material of part.In the case of bonding, production complexity is relatively low, and cohesive intensity and durability is higher.
Gear and sensor element are preferably under any circumstance all at least in the region of corresponding contact surface by plastics
Construction.Here, gear and the surface at least to be abut against each other in the region of contact surface of sensor element, i.e. composition surface can be by
Plastics compatible with each other are formed for integrally engagement connection.This means gear and sensor element completely or partially by
Plastic material is made, the plastic material just limit one engagement connection intensity parameter such as material specific sticking performance,
It is mutually adapted for surface smoothness etc..Thus, for example it can be produced and plastics sheet by means of ultrasonic bonding or laser welding
Body has being welded to connect for same intensity.Another particular advantage is：The tooth being made of plastics in the equipment of general type
The use of wheel be it is known and be through testing and testing, therefore manufacture sensor element shell or housing plastics at it
Aspect of performance must be essentially adapted to manufacture the plastics of gear, to realize Best link.
Gear is molded into steering spindle preferably as injection molded part.Here, the steering spindle being typically made from steel is determined
Position is embedded into the plastics injected in liquid form in injection molding and integrally engagement connection in a manner of it can not be split
In.Additional positive locking element can be preferably provided with the section of steering spindle, the additional form fit locking
Element further increases the intensity of connection and simplifies the reproducible relative bearing of gear ring and steering spindle.According to this hair
In bright device, formed in this way and plastics/steel of durable is connected to sensor element by can be simple
Ground is produced and especially firm one engagement plastic/plastic is connected and is attached in the equipment of general type.
Advantageously, sensor element is with the circular basic shape being coaxially disposed in steering spindle and with substantially
The contact surface circlewise extended.In sensor device known in the art, circular basic shape by be arranged to with steering
The magnetic flux conductors that the coaxial mode of axle is distributed circumferentially cause.The magnetic flux conductors are preferably arranged in the tool being made of plastics
Have in main body or the housing for being connected to the surface of gear, i.e. contact surface or composition surface.Main body or housing can be annular circles
All configurations, therefore the best orientation of sensor element and reliable fastening can be ensured with relatively low production complexity.
Gear and sensor element preferably can axially abut against each other in the region of contact surface.Here, contact surface
With the axial face of realization due to the fact that：The surface that corresponds to each other and can be in contact with each other in the axial direction, example
The axial annular face for being such as connected to circumferential shoulder or axial end is arranged to composition surface on gear and sensor element.It is described
One advantage of device is：Gear all there is suitable axial face can be simply constructed as contact surface under any circumstance
Dish type basic configuration.Another advantage is：The particularly satisfactory contact surface to abut against each other is for passing through ultrasonic bonding
It is come-at-able for the welding operation of progress.In other words, welding required excitation can be by annulus cross-sectional shape or tubulose
The supersonic generator of cross sectional shape is carried out, and the supersonic generator can coaxially guide via steering spindle and will sensing
Device element is axially pressed against gear.
In a favourable improvement, sensor element has with gear to be connect each other in a manner of shape-ordinatedly locking
The positive locking element of conjunction.The positive locking element is used for relative positioning, is particularly used for sensor element phase
Centering for gear simultaneously thus be accordingly used in centering of the sensor element relative to steering spindle.For example, positive locking element can
To be formed by protuberance, axially outstanding and sensor element annular body can be with axle from gear for the protuberance
It is pushed to ground on the protuberance.Radially positioned over the projections, i.e. in sensor element pair in sensor element
In the case of, sensor element with the surface on axially opposed gear, i.e. contact surface axially contacts when with radially limited
Mode is positioned in assembling position.Therefore, in the case of for example by welding or bonding realization one engagement fastening, it is ensured that
Sensor element relative to gear clearly limit be accurately positioned.
Furthermore it is advantageous that gear and sensor element arrangement are in the housing, sensor device is located on the housing
Component is make it that the component is static relative to sensor element.The component can be used for receiving the measurement signal of sensor element,
And the sensing element of the angle adjustment for detection sensor element is configurable to, such as is configured for having and angle
The magnetic field sensor of the sensor element of related magnet apparatus.The component is via the housing of equipment with relative to rotatable biography
The mode that sensor component is fixed is arranged on the vehicle body of vehicle, and hence in so that phase can be detected during the rotation of steering spindle
To angle change.The particularly compact global design of equipment can be realized by the combination of component.
The purpose is equally implemented by method according to claim 11.
Propose it is a kind of be used to produce be used to introduce auxiliary torque and/or attached into the steering spindle of electromechanical power steering
Add the method for the equipment of steering angle, this method includes following methods step：Gear is provided for electromechanical power steering, for sensing
Device device provides sensor element, and sensor element is positioned at gear or on gear in predetermined position, sensed
Non-disconnectable connection is formed between device element and gear.
During sensor element is positioned at gear and/or is positioned on gear, sensor element movement is located in
Sensor element is waited to be fixed, the position i.e. to be connected to gear.Positioning is preferably by promoting or pressing sensor element
Carried out on to the protuberance of gear.Cause fully here, the promotion or pressing to sensor element can be carried out into preferably
Contact, i.e., untill stopping.This provides what sensor element can be positioned in the case of not especially complex
Advantage.
Non-disconnectable connection is formed between sensor element and gear preferably to carry out in a manner of integrally engaging.This can be with
Such as carried out by laser welding, ultrasonic bonding or by bonding.
Brief description of the drawings
The Advantageous embodiments of the present invention will be hereinafter explained in more detail using accompanying drawing, specifically, in accompanying drawing
In：
Fig. 1 shows the schematic isometric diagram of the steering with power assist apparatus of motor vehicles,
Fig. 2 shows the schematic cross-sectional through the equipment for introducing auxiliary torque into steering spindle,
Fig. 3 shows the schematic perspective view that the state that the equipment is partially broken away is according to Fig. 2 equipment,
Fig. 4 shows the schematic longitudinal section of the longitudinal axis along steering spindle of the equipment according to Fig. 2,
Fig. 5 shows the schematic isometric diagram of gear, wherein, sensor element is installed on gear,
Fig. 6 shows diagram as in fig. 5, wherein, the sensor element shown is removed,
Fig. 7 shows the schematic isometric diagram of the sensor element of the equipment for a figure in earlier figures,
Fig. 8 shows the schematic longitudinal section of the longitudinal axis along steering spindle of the partial devices according to Fig. 5,
Fig. 9 shows the detailed diagram according to Fig. 8 in first embodiment,
Figure 10 shows the detailed diagram according to Fig. 8 in second embodiment, and
Figure 11 shows the detailed diagram according to Fig. 8 in the 3rd embodiment.
Embodiment
In each figure, identical part is provided with identical reference and therefore under any circumstance all the time
Generally only it is instructed to or refers to once.
Fig. 1 schematically shows motor vehicles steering 100, and the motor vehicles steering 100 causes driver
It can be required and steering moment (steering torque) corresponding to being introduced via steering wheel 102 into steering spindle 1 according to turning to.Turn to and turn round
Square is transferred to the steering little gear 104 engaged with rack 106 via steering spindle 1, and rack 106 passes through drag link in itself
108 displacement and predetermined steering angle is transferred to the steerable wheel 110 of motor vehicles.
Electric assisting apparatus can be to be attached to the power assist apparatus 112 of steering spindle 1 in input side, be connected to little gear
104 power assist apparatus 114, and/or be attached to rack 106 power assist apparatus 116 form provide.Corresponding power
Auxiliary torque is coupled in steering spindle 1 and/or steering little gear 104 and/or will be auxiliary by servicing unit 112,114 or 116
Power-assisted is coupled in rack 106, therefore driver is aided in during work is turned to.The three different power shown in Fig. 1
Servicing unit 112,114 and 116 shows the possible position for arranging power assist apparatus 112,114 and 116.
Generally, the single position in the position only shown is fitted with power assist apparatus 112,114 or 116.Treat by means of
Corresponding power assist apparatus 112,114 or 116 applies to aid in the auxiliary torque of driver or auxiliary force by considering by driving
The steering torque that the person of sailing introduces is limited and determined by torque sensor 118.Alternative solution as the introducing of auxiliary torque
Or the introducing of auxiliary torque is combined, additional turn can be introduced into steering by power assist apparatus 112,114,116
To angle, the additional steering angle is added with the steering angle applied by driver via steering wheel 102.
Steering spindle 1 is in input side with the input shaft 10 for being connected to steering wheel 102 and in outlet side with via steering
Little gear 104 is connected to the output shaft 12 of rack 106.Input shaft 10 is with output shaft 12 via the torsion not observed in Fig. 1
Bar 130 (referring to Fig. 4) is attached to each other in a manner of turnable elastic.In this way, when output shaft 12 relative to input shaft 10 simultaneously
Non- when being rotated in a manner of Complete Synchronization, the moment of torsion being input to by driver via steering wheel 102 in input shaft 10 always causes
Input shaft 10 rotates against relative to output shaft 12.Described between input shaft 10 and output shaft 12 rotates against can be via
Angular sensor measures, and the corresponding input torque relevant with output shaft 12 can be accordingly based on torque arm 130
Known torsional rigidity limit.In this way, torque sensor 18 passes through to relative between input shaft 10 and output shaft 12
The determination of rotation configures.Such torque sensor 118 is known in principle and for example can be following article
The electromagnetic sensor device that will be described with, or can be by being realized to another measurement rotated against.
Therefore, applied to the steering torque of steering spindle 1 or input shaft 10 and will only exported via steering wheel 102 by driver
By power assist apparatus 112,114,116 when axle 12 is resisted the rotational resistance of torque arm 130 and rotated relative to input shaft 10
One of cause the input of auxiliary torque.
As an alternative, torque sensor 118 can also be arranged in the place of position 118 ', therefore steering spindle 1 is to input shaft
10 and output shaft 12 separate and carried out by torque arm 130 turnable elastic connection be present at diverse location so that can
To determine to rotate against and therefore be rotated against according to the output shaft 12 that input shaft 10 is attached to via torque arm 130 come phase
Should ground determination input torque and/or auxiliary torque to be applied.
In addition, the steering spindle 1 in Fig. 1 includes at least one universal joint 120, the route of the steering spindle 1 in motor vehicles
Steric requirements can be adapted to by means of the universal joint 120.
Fig. 2 shows the schematic sectional view of the equipment 2 for introducing auxiliary torque into motor vehicles steering 100
Show.Gear 20 (being herein worm gear) is provided with, the gear 20 is connected to the steering spindle 1 schematically shown.Gear 20 rotates about
The rotation of axis 200 introduces auxiliary torque into steering spindle 1, so as to correspondingly introduce auxiliary force or additional steering into switch-back
Angle, rotation axis 200 are also called Gear axis or worm gear axis 200 and configured herein by steering spindle 1.
Gear 20 drives via the geared worm 22 driven in itself by the electro-motor 24 schematically shown, electricity
The output section 240 of dynamic motor 24 is correspondingly attached to geared worm 22 to transmit moment of torsion.Here, the axis and tooth of geared worm 22
Wheel axis 200 is non-intersect.Geared worm 22 is preferably made up of hardened steel.
Fig. 2 section diagrammatically show the housing 3 of the equipment 2 for introducing auxiliary torque, and housing 3 receives the first wear-resisting shaft
26 are held, the output shaft 240 of first anti-friction bearing 26 radially support electric motor 24.In addition, it is provided with the second anti-friction bearing
28, the driving side end of geared worm 22 is radially supported in second anti-friction bearing 28.
The end 460 opposite with the output section 240 of electro-motor 24 of geared worm 22 is arranged in support apparatus 4, branch
Equipment 4 is held to make it also possible to carry out angle compensation in addition to geared worm 22 is radially installed.
Fig. 3 and Fig. 4 also illustrates equipment 2, and case lid 31 is eliminated in Fig. 3 stereogram to improve clearness.Institute
State in figure it is observed that sensor device 5, the sensor device 5 include：Sensor element 51, the sensor element 51 are fixed
Ground is connected to gear 20 to be rotated together with gear 20；And component 52, the component 52 are assigned to the sensor element 51
And it is fastened to housing 3 in a manner of static relative to gear 20.Component 52 is used for receiving being exported by sensor element 51 first
Measurement signal and measurement signal is transferred to controller, its sub-assembly 52 can be configured to and fixed relative to sensor element 51
Position is into causing：Such as being detected with the magnetic field of angle change to sensor element 51, sensor element 51 by component 52
It can be measured in this way relative to the Angle Position of housing 3, and therefore gear 20 and the Angle Position of steering spindle 1 can be with this sides
Formula measures.
From Fig. 4 section, diagram can be known：Gear 20 is fastened on the output shaft 12 of steering spindle 1.Output shaft 12 passes through
Torque arm 130 is connected to the input shaft 10 of steering spindle 1 in a manner of turnable elastic.In the embodiment as shown, sensor member
Part 51 is fixedly connected to output shaft 12；In alternative embodiment, sensor element 51 may also connect to input shaft 10.
Input shaft 10 has the magnet apparatus (not specifically illustrated in accompanying drawing) being coaxially disposed in sensor element 51.By driver
In the case of introducing steering torque into input shaft 10 via steering wheel 102, the input shaft 10 rotates relative to output shaft 12.
Depending on for magnet apparatus is rotated against by means of sensor element 51 to detect described in the steering torque introduced by driver,
It is and described to rotate against as determining to be transferred to output shaft 12 via geared worm 22 and gear 20 by electro-motor 24
Auxiliary torque control variable.
The sensor element 51 specifically illustrated in Fig. 7 has general toroidal main body 53, and the general toroidal main body 53 is preferably
Injection molded part is preferably configured to by plastics.The part for example in the form of stator lasmination 54 of actual electrical measurement
It can be attached in main body 53, stator lasmination 54 is distributed circumferentially, in embedded plastics, and in the accompanying drawings only by schematically
Show.
Annular body 53 is coaxially disposed in steering spindle 1, is for example arranged on output shaft 12, and annular body 53 is such as
By in axial direction being moved towards gear 20 as shown in the arrow in Fig. 6.Here, in main body 53 in end side structure
Tubulose shoulder 55 in axial direction by form fit lock in a manner of promoted or be pressed on gear 20 in end side structure
On the tubular protuberance 210 made, sensor element 51 relative to the centering of gear 20 and therefore also relative to the centering of output shaft 12,
And certain prestressing force between protuberance 210 and shoulder 55 be present.
The end position during attachment of sensor element 51 is shown in Fig. 5.The tight abutment tooth of sensor element 51
Take turns 20 axial end sidepiece and form compact structure unit.In the example shown it is observed that how input shaft 10 passes through input
The end for being axially facing gear 20 of axle 10 and be inserted into the opening section of main body 53 of sensor element 51.Due to being attached at
The above-mentioned magnet apparatus (not specifically illustrated) of the end of input shaft 10, input shaft 10 can relative to rotating against for output shaft 12
To be detected by sensor element 51.
Fig. 8 shows the longitudinal cross-section that output shaft 12 is passed through along the direction of Gear axis 200 in a manner of similar to Fig. 5,
But it illustrate only sensor element 51 rather than whole sensor device 5.Especially, it is apparent that being made up of plastics from Fig. 8
Gear 20 how to be attached on the output shaft 12 being preferably made of steel.Connection can preferably by using injection molding and
Gear 20 is molded into injection mold on output shaft 20 to carry out, that is to say, that output shaft 12 is by the plastic material that melts
It is fenced.As shown here, this can be carried out by diaphragm gate, and as an alternative, this can be entered by continuously pouring into a mould
OK.It is achieved that fixed one engagement connection.In addition, output shaft 12 can have form fit locking member on their outer circumference
Part 121, such as by filling plastic and ensure to lock the rib or groove that connect to the form fit of gear 20.
Fig. 9, Figure 10 and Figure 11 are illustrated Fig. 8 sectional view with the ratio amplified, these sectional views illustrate in detail by
Plastics form main body 53 to the gear 20 being equally made up of plastics connection.As described above, sensor element 51
Tubulose shoulder 55 be axially arranged in a manner of form fit locks on protuberance 210, therefore on Gear axis 200
Centering action occurs.In the opening of shoulder 55, radially-inwardly the annular axial end on prominent protuberance 56 forms axle
To contact surface 57.The correspondence that contact surface 57 is connected to the same annular axial end 211 of gear 20, is connected to gear 20 connects
Contacting surface 211.In other words, contact surface 57 and contact surface 211 are formed between the plastics of gear 20 and the plastics of sensor element 51
The composition surface of connection.
A preferred embodiment of the present invention causes sensor element 51 to be connected to gear in a manner of integratedly engaging
20.In the embodiment as shown, one engagement is connected to the contact surface 57 and contact surface 211 axially to abut against each other --- and one
Body engagement connection composition surface --- region in carry out.
Fig. 9 schematically shows the heated welding operations carried out by means of laser 6.Therefore, what is shown by a dotted line swashs
Light beam 61 is axially radiated in protuberance 56.Due to sensor element 51 in the region of the protuberance 56 by used
The fact that the plastic material of laser-light transparent is made, laser beam 61 left from contact surface 57 and be radiated at gear 20 herein against
On the contact surface 211 of the contact surface 57.Because gear 20 can not by used laser in the region of the contact surface 211
The fact that the plastics penetrated are formed, heat discharge herein, and this causes the fusing of the plastics on both surfaces 57 and 211 and therefore drawn
Play welding operation.It is especially solid due to the fact compatible plastics are used for gear 20 and sensor 51 for integrally engagement connection
Fixed one engagement connects through the approximate continuous plastic construction of homogeneous and realized.
As shown in Figure 10, as an alternative, instead of laser beam, ultrasonic welding unit 7, contact surface 57 can be used
Contact surface 211 is axially pressed against and by by means of ultrasonic wave by the supersonic generator 71 of ultrasonic welding unit 7
The coupled frictional heat of excitation and hot weld is connected to contact surface 211.Therefore, equally produced between gear 20 and sensor element 51
Lasting one engagement connection.
Figure 11 schematically shows the heated welding operations carried out by means of laser 6.Therefore, what is shown by a dotted line swashs
The radial direction eradiation of light beam 61.Laser beam 61 is radiated on the contact surface 211 of the setting of gear 20 in this place.By gear 20 is in institute
State and be made up of in the region of contact surface 211 the not transparent plastics of used laser and sensor element 51 is in contact surface 57
Region in the fact that be made up of the not transparent plastics of used laser, heat discharges herein, and this causes surface 57 and 211 liang
The fusing of plastics on person and therefore cause welding operate.Because compatible plastics for integrally engagement connection are used for gear
20 and the fact that sensor element 51, particular fixed one engagement connects through the approximate continuous plastic construction of homogeneous and reality
It is existing.
Suitably, in the case of without departing substantially from the scope of the present invention, each spy for being shown in each illustrative embodiments
Sign can be combined with each other and/or exchange.
Reference numerals list
1 steering spindle
10 input shafts
12 output shafts
100 motor vehicles steering
102 steering wheels
104 turn to little gear
106 racks
108 drag links
110 steerable wheels
112 power assist apparatus
114 power assist apparatus
116 power assist apparatus
118 torque sensors
118 ' torque sensors
120 universal joints
130 torque arms
2 equipment for introducing auxiliary torque
20 gears
200 Gear axis
210 protuberances
211 contact surfaces (composition surface)
22 geared worms
24 electro-motors
The anti-friction bearing of the output shaft of 26 electro-motors
The anti-friction bearing of 28 geared worms
29 support apparatus
220 geared worm axis
The output section of 240 electro-motors
3 housings
31 case lids
4 support apparatus
460 along the end of axis 220
5 sensor devices
51 sensor elements
52 components
53 main bodys
54 stator lasminations
55 shoulders
56 protuberances
57 contact surfaces (composition surface)
6 lasers
61 laser beams
7 ultrasonic welding units
71 supersonic generators
Claims (11)
1. one kind is used to introduce auxiliary torque and/or additional steering angle into the steering spindle (1) of electromechanical power steering (100)
Equipment (2), the equipment (2) include：Gear (20), the gear (20) be fixedly attached within the steering spindle (1) with
Rotated with together with the steering spindle (1), the gear (20) is operatively connectable to the driving element (22) of drive motor (24)
And it can be rotatably driven by the driving element (22)；And sensor element (51), the sensor element (51) are solid
Surely the steering spindle (1) is connected to be rotated together with the steering spindle (1),
Characterized in that, the sensor element (51) and the gear (20) are connected to each other with contact surface (57,211).
2. equipment according to claim 1, it is characterised in that the sensor element (51) is in a manner of integratedly engaging
It is connected to the gear (20).
3. equipment according to claim 2, it is characterised in that the gear (20) is soldered to the sensor element
(51)。
4. equipment according to claim 2, it is characterised in that the gear (20) is bonded to the sensor element
(51)。
5. equipment according to claim 1, it is characterised in that the gear (20) and the sensor element (51) are in office
What all at least it is made up of in the case of in the region of the contact surface (57,211) plastics.
6. equipment according to claim 5, it is characterised in that the gear (20) is molded into institute as injection molded part
State in steering spindle (1).
7. equipment according to claim 1, it is characterised in that the sensor element (51), which has, is coaxially disposed in institute
State the circular basic shape in steering spindle (1) and the contact surface (57) extended with general toroidal.
8. equipment according to claim 1, it is characterised in that the gear (20) is with the sensor element (51) in institute
State and axially abut against each other in the region of contact surface (57,211).
9. equipment according to claim 1, it is characterised in that the sensor element (51) and the gear (20) have
The positive locking element (210) being engaged with each other in a manner of shape-ordinatedly locking.
10. equipment according to claim 1, it is characterised in that the gear (20) and the sensor element (51) cloth
Put in housing (3), sensor is located in a manner of fixed relative to the sensor element (51) on the housing (3)
The component (52) of device (5).
11. one kind be used for produce be used for electromechanical power steering (100) steering spindle (1) in introduce auxiliary torque and/or
The method of the equipment (2) of additional steering angle, methods described include following methods step：
(A) gear (20) is provided for the electromechanical power steering,
(B) sensor element (51) is provided for sensor device (5),
(C) sensor element (51) is positioned at the gear (20) place or the gear (20) in predetermined position
On,
(D) non-disconnectable connection is formed between the sensor element (51) and the gear (20).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015000928.1 | 2015-01-28 | ||
| DE102015000928.1A DE102015000928B3 (en) | 2015-01-28 | 2015-01-28 | Device for introducing an auxiliary torque in a steering shaft of an electromechanical power steering system |
| PCT/EP2015/071733 WO2016119923A1 (en) | 2015-01-28 | 2015-09-22 | Apparatus for introducing an auxiliary torque into a steering shaft of an electromechanical power steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107406095A true CN107406095A (en) | 2017-11-28 |
| CN107406095B CN107406095B (en) | 2020-10-13 |
Family
ID=54150430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580074783.0A Active CN107406095B (en) | 2015-01-28 | 2015-09-22 | Device for introducing an assistance torque into a steering shaft of an electromechanical power steering system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10449998B2 (en) |
| EP (1) | EP3250440B1 (en) |
| CN (1) | CN107406095B (en) |
| DE (1) | DE102015000928B3 (en) |
| WO (1) | WO2016119923A1 (en) |
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| CN109955896A (en) * | 2017-12-22 | 2019-07-02 | 美国Trw天合汽车集团 | Torque is superimposed transfer |
| CN111542710A (en) * | 2017-12-22 | 2020-08-14 | 蒂森克虏伯普利斯坦股份公司 | Worm wheel for a worm gear mechanism of a motor vehicle steering system with a bearing ring injected between the hub and the gear rim |
| CN111699364A (en) * | 2018-02-15 | 2020-09-22 | 法国大陆汽车公司 | Torque sensor integrated with an angular position sensor of a rotating element |
| CN112166311A (en) * | 2018-05-29 | 2021-01-01 | 蒂森克虏伯普利斯坦股份公司 | Torque sensor unit with a press-in sensor unit |
| CN112384429A (en) * | 2018-07-11 | 2021-02-19 | 蒂森克虏伯普利斯坦股份公司 | Adjusting drive for a steering column, motor-adjustable steering column for a motor vehicle, and method for adjusting a bearing assembly of an adjusting drive |
| CN112444287A (en) * | 2019-08-30 | 2021-03-05 | 弗兰德有限公司 | Sensor unit and transmission device with at least one such sensor unit |
| CN114248828A (en) * | 2020-09-25 | 2022-03-29 | 均胜安全系统德国有限公司 | Steer-by-wire system |
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| DE102018117155A1 (en) | 2018-07-16 | 2020-01-16 | Trw Automotive Gmbh | Steering assist device |
| DE102018123885A1 (en) * | 2018-09-27 | 2020-04-02 | Thyssenkrupp Ag | Angle sensor with two-pole magnet for motor vehicle steering |
| FR3098483B1 (en) * | 2019-07-12 | 2021-06-18 | Jtekt Europe Sas | Power steering system with a retractable steering column with improved recoil stroke by means of a through-inductive sensor |
| FR3098482B1 (en) * | 2019-07-12 | 2021-06-18 | Jtekt Europe Sas | Power steering system with a retractable steering column with an improved recoil stroke by means of a lower target, for angle measuring device, integrated with a tangent reducer wheel |
| US11124224B2 (en) * | 2019-11-27 | 2021-09-21 | Hiwin Technologies Corp. | Electric power steering system |
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| CN111542710A (en) * | 2017-12-22 | 2020-08-14 | 蒂森克虏伯普利斯坦股份公司 | Worm wheel for a worm gear mechanism of a motor vehicle steering system with a bearing ring injected between the hub and the gear rim |
| CN109955896A (en) * | 2017-12-22 | 2019-07-02 | 美国Trw天合汽车集团 | Torque is superimposed transfer |
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| CN112166311A (en) * | 2018-05-29 | 2021-01-01 | 蒂森克虏伯普利斯坦股份公司 | Torque sensor unit with a press-in sensor unit |
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| CN112444287B (en) * | 2019-08-30 | 2024-04-30 | 弗兰德有限公司 | Sensor unit and transmission having at least one such sensor unit |
| CN114248828A (en) * | 2020-09-25 | 2022-03-29 | 均胜安全系统德国有限公司 | Steer-by-wire system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3250440B1 (en) | 2021-04-21 |
| US20180015944A1 (en) | 2018-01-18 |
| CN107406095B (en) | 2020-10-13 |
| WO2016119923A1 (en) | 2016-08-04 |
| EP3250440A1 (en) | 2017-12-06 |
| DE102015000928B3 (en) | 2016-07-21 |
| US10449998B2 (en) | 2019-10-22 |
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